from Ryuugajou Nanana no Maizoukin
He is Tensai's assistant, where they maintain a sort of Sherlock Holmes and John Watson-like relationship. Though he may look like a girl, he is actually a cross-dressing boy. Daruku, along with Tensai, transfer into Juugo's school where they are also the his classmates after their brief visitation at the his apartment where they also met Nanana. He also becomes a member of the "Adventure Club" since he goes wherever Tensai goes.
Ryuugajou Nanana no Maizoukin
“I'm going to build a place where young people can challenge to reach any of their dreams!” The 7 genius students, known as the GREAT 7, launched a project to construct an artificial island called Nanae Island to realize their leader, Nanana Ryugajo's peculiar idea. 12 years later, with a total population of 100,000 people with as much as 80% of those inhabitants being students, Nanae Island has successfully become prosperous as a special student zone. One of the island's newest residents was Jugo Yama--a high school student who had just transferred to the island after being disowned by his father. One day, Jugo finds in his own apartment the earth-bound spirit of the late Nanana Ryugajo, who was murdered by someone 10 years ago! Jugo's plan of living alone was suddenly thwarted by this strange roommate.
